Teichmüller geodesics and Veech groups
at the International Workshop on Teichmüller Theory and Moduli Problems
Harish-Chandra Research Institute,
Allahabad, India, 7 January 2006
(an expanded set of notes from this talk, to appear in the conference proceedings, is available here)

Applications of Delaunay triangulations to Teichmüller theory Ahlfors-Bers Colloquium,
Rutgers University, Newark, 8 May 2008 Here is my submission to the proceedings of this conference.
(slides from this talk)